Stop motion for looms



April 7, 1931. A, RlGBY 1,799,250

STOP MOTION FOR LOOMS I Filed Oct. 29, 1929 W /4 lNVE/VTUH,

azure 77l'gb], BY p 9 Arron/w,

Patented Apr. 7, 1931 UNITED STATES PATENT es ALBERT RIGBY, OFPATERSON,,1\TEW JERSEY, ASSIGNOR TO GILT EDGE SILK MILLS OF NEW JERSEY,INQ, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW .rnnsnY STO IP MOTIONFOR- LOOMS Application filed. October 29, 1929. Serial No. 403,158.

This invention relates tolooms having electrically actuated means toeffect some operation, as one resulting in the stopping of the loom,when the weft or filling in the shuttle is exhausted. The principalobject is to provide a core for the wound filling package which will beadapted to close the circuit with certainty when the filling has beende-- pleted to a certain extent but not so far that on the last pickbefore the mentioned op eration occurs the end of the filling will beleft in the shed, unconnected with the shuttle.

In the drawing,

Fig. 1 is a plan of ashuttle equipped with a quill or core embodying myinvention and showing certain parts of a loom also in plan and more orless diagrammatically; y Fig. 2 shows said quill orcore; Fig. 3. is anenlarged fragmentaryview of said quill or core, partly in section, withone of the terminals or feelers of the circuit of the electricallyactuated means; and

Fig. 4 shows a modified form of the quill or core.

1 is the breast-beam of a loom, 2 the batten reciprocatory toward andfrom the breast beam, 3 the shuttle, 4: the pickerfor the shuttle, 5 abracket on the breast-beam in which is supported, in the usual manner soas to yield from the batten each time the same moves toward thebreast-beam, a pair of terminals or feelers 6, 7 springs'normally urg-Ving said terminals or feeders toward the batten, holding them in theposition shown,

8 an electric circuit having said springs and a source of energy 9, and10 any means to be actuated on closing said circuit, as to stop the loomor cause in some way filling refor electrically bridging the feelers andhence plenishment. The feelers are caused to yield closing said circuitwhen the filling A is exhausted.

This ferrule (referring, first, to Figs. 1 to 3) is formed by a lengthof wire 14 wound spirally from a point near the flange 11a of the corearound the tapering butt 11?) thereof to a point in the shank of thecore more or less removed from the smaller end of said butt. To preservethewire ferrule in fast relation to the quill, which as usual may be andpreferably is of some yielding material as wood, preferably all of thefollowing expedients are resorted to: A few of its convolutions at eachend are by solder cemented circumferentially together as at 15, so thatin each instance the convolutions affected form in effect an integralhand, all the convolutions or whorls are further integrally united by anarrow strip of solder 16, which preferably extends; spirally; theconvolutions, being round in cross-section, form interior ribs, andthese rest in grooves 17, which grooves result from winding the wiretightly around the core so as to impress itself therein; and finallytheend of the wire at the smaller end of the ferrule is bent inward and setin a hole '18 in the core. All the solder bands are filed off smooth.

, It is desirable in mechanisms of this class to havethe endof thefilling which is the end first placed on the .quill remain attachedthereto when, on the feelers 6 contacting with the circuitclosing medium(here the for rule) and the means 10is consequently actu- 'ated, thelast'pick of the shuttle is effected,

so that the last shot of filling will be a complete shotand the endofthe filling will not a be left within the shed. It is possible by my.

invention to keep a reserve including said end attached to the quilluntil this last pick .is completed because the exterior surface of the.ferrule is grooved, whereby the windings forming such reserve sink inthe grooves and thus leave the ribs of the metal ferrule existingbetween its grooves exposed to the con- .1

new to form the grooves as components of a 3.:

single spiral recess (as that existing exteriorly of my spirally woundferrule), and to form this recess so that it shall progress spirally inthe same direction as the windings are wound, as I in fact preferablydo, whereby reaching-over of the filling from one to the next groove andthe consequence that this condition might prevent closing of the circuituntil not enough reserve was left to reach across the shed on the lastpick are avoided. It is with this last consideration in mind that I formthe solder band 16 spirally instead of truly axially of the ferrule;this band, by filling the grooves, prevents where it exists thesheathing of the windings, and if it extended axially it might finditself positioned opposite the feelers (at least in the case where, asusual, they occupy a horizontal plane) and so the filling might preventtheir contact with the ferrule until the effective reserve of fillingwas too far e2:- hausted. By arranging the band 16 spirally, or at anyrate so that it will be oblique to the feelers according to the planethey occupy, I avoid its being a possible factor in the closing of thecircuit occurring too late since thereby the feelers may straddle it orone at least fail to contact therewith.

In Fig. 4 the ferrule 19 is of sheet metal having a primary shapegenerally conforming to that of the butt-portion of the quill or core.Having slipped it over said buttportion its edge 19a is peened overagainst the outer face of the flange 11a of the butt.

i This sleeve has the circumferential grooves 19?) (here each formed ina plane) and if these are formed, as shown, by crimping the metal theconsequent interior ribs resulting will interlock with grooves 20 in thecore; these grooves may be pro-formed or result from the operation ofcrimping the ferrule after installing it on the core. The whorlsexisting between the grooves 19?) receive the contact of the feelers.

Having thus fully described my invention. what I claim is:

1. In combination, a shuttle quill and a coil of circuit-closingmaterial wound around the quill in a windings-receiving portion thereof.

2. In combination, a shuttle quill and a ferrule consisting of a coil ofcircuit-closing material wound around the quill in a wind ings-receivingportion thereof, said ferrule having windings-receiving grooves.

3. In combination, a shuttle quill and a coil of circuit closingmaterial wound around the quill in a windings-receiving portion thereof,the convolutions of said coil having exterior windings-receiving groovesbetween them.

4. In combination, a shuttle quill and a. ferrule on thewindings-receiving portion thereof consisting of a series ofcircuit-closing whorls arranged close together having exterior. narrow.grooves between them 5. A wound shuttle package comprising a quillhaving an exterior spirally grooved circuit closing surface in itswindings-receiving portion and windings 0f filling wound around thequill in engagement with sa1d surface and spirally in the same rotativedirection as the grooving of such surface.

6. In combination, a shuttle quill, a series of whorls ofcircuit-closing material fitted on the quill in a windings-receivingportion thereof, end whorls is in the series being cemented together.

7. In combination, a shuttle quill, a series of whorls ofcircuit-closing material fitted on the quill in a windings-receivingportion thereof, and a strip of cementing material joining whorls of theseries together.

8. In combination, a shuttle quill, a series of whorls ofcircuit-closing material fitted on the quill in a windings-receivingportion thereof, and a strip of cementing material joining whorls of theseries together and extending spirally of the series.

9. In combination, with a pair of feelers of an electric weft-stopmotion of a loom, a shuttle, a quill in the shuttle, a series of whorlsof circuit closing material fitted on the quill in thewindings-receiving portion thereof and adapted to be contacted by thefeelers, and a strip of cementing material joining the whorls of theseries together and arranged obliquely to a plane common to the feelers.

10. A bobbin having a body and having a length. of electric conductingmaterial wound helically thereon to present a continuous conductingsurface when uncovered by weft absence.

In testimony whereof I afiiX my signature.

ALBERT RIGBY.

